Monitor



FIG. 1 is a perspective view of the monitor of the present invention;

FIG. 2 is a front elevational view of the monitor of the present invention;

FIG. 3 is a rear elevational view of the monitor of the present invention;

FIG. 4 is a left side view of the monitor of the present invention;

FIG. 5 is a right side view of the monitor of the present invention;

FIG. 6 is a top plan view of the monitor of the present invention; and,

FIG. 7 is a bottom view of the monitor of the present invention. 

The ornamental design for a monitor, substantially as shown and described. 